Chimp Test

The Chimp Test is the iconic “humans vs. chimpanzees” working-memory game. It’s a digital version of Tetsuro Matsuzawa’s experiment at the Primate Research Institute of Kyoto University, where young chimpanzee Ayumu consistently outperformed humans at remembering brief flashes of numbered positions.

How to play

• Numbers 1 through N appear at random positions (start at N=4).
• Click “1” first. The instant you do, all other numbers turn into blue blanks.
• From memory, click 2, 3, … N in order.
• Get them all right and advance — next round has N+1 numbers.
• Click a wrong cell = strike. 3 strikes ends the game.
• After a strike, the round resets.

The chimp study

In Matsuzawa’s 2007 experiment, Ayumu was shown numerals 1-9 on a touchscreen for as little as 210 milliseconds — then replaced with blank squares. Ayumu reliably clicked them in numerical order. Most adult humans couldn’t match his accuracy. The interpretation is contested (Ayumu had extensive specific training; humans were untrained), but the surprising result has stuck.

Strategy for humans

• Take a snapshot, not a list. Hold a visual snapshot of the whole board.
• Look at the middle of the board. Use peripheral vision.
• Don’t click “1” before memorizing. The instant you click 1, the rest hide.
• Chunk by region. “1-2-3 in top-left, 4-5 in middle, 6-7 right.”
• Practice eidetic recall. Most humans cap at 8-10. Top players reach 15+.

Intermediate strategy

• Encode sequentially. Memorize positions in order they appear.
• Strategic glance. Spend 2-3 seconds memorizing before clicking 1.
• Verbalize positions. “Top-left, middle, right-middle…”
• Avoid distractions. Click rapidly once started.

FAQ

• Q: Is the chimp study real? A: Yes — published Matsuzawa et al. 2007. Ayumu was a young chimp; performance compared with untrained adult humans.
• Q: Why is it hard? A: You must memorize 4-10+ positions in 1-3 seconds, then click them blind.
• Q: Best score? A: Top humans reach 15-20. Most cap at 10-13.
• Q: Did the chimp really beat humans? A: At flash speeds under 600ms, yes — Ayumu outperformed most adult humans.

For other memory games, try Visual Memory, Number Memory, Memory Match, or Simon.